Faculty Mentor(s)

Dr. Brian Rider, Kinesiology

Document Type

Poster

Event Date

4-12-2024

Abstract

Smartwatches and submaximal tests, such as step tests, are utilized to predict maximal oxygen consumption (VO2max). The Polar Grit X Pro watch claims to predict VO2max via its Fitness Test Function (FTF). However, this watch and its FTF have not been validated. The purpose of this study was to determine if the Polar Grit X Pro watch, the Queens College Step Test, and the Forestry Step Test accurately predict VO2max in experienced runners aged 18-22 (n=15). Participants included 7 males (20.29 ± 1.11 years) and 8 females (19.63 ± 1.06 years). All participants performed a graded maximal treadmill test, two submaximal step tests, and the Polar Fitness Test. It was hypothesized that all tests would be valid predictors of VO2max. Data were analyzed using a repeated measures analysis of variance with a Bonferroni adjustment along with a Pearson's correlation. Results indicated that the Polar Grit X Pro watch (57.67 ± 7.86 ml/kg/min) was not a valid predictor of VO2max across the entire population’s true VO2max (47.15 ± 4.06 ml/kg/min, p = 0.001). However, the Polar watch was a valid predictor of VO2max in females (52.875± 6.47 ml/kg/min, p = 0.166) when compared to the criterion measure (45.7 ± 3.3 ml/kg/min). Both step tests were valid predictors of VO2max in male and female experienced runners (p = 1.000). Therefore, female experienced runners could consider purchasing the Polar Grit X Pro to track cardiorespiratory fitness. Furthermore, both males and females could utilize either step test to predict VO2max. Future research is needed to determine if these results can be expanded to other populations and whether a clinical significance is present.

Comments

This research was funded by the Hope College Kinesiology Department.

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